pitchman vs hawker

pitchman and hawker both are nouns.

Word	Noun	Adjective	Verb	Adverb
pitchman	Yes	No	No	No
hawker	Yes	No	No	No

As nouns, pitchman and hawker are synonyms defined as:

pitchman and hawker: someone who travels about selling his wares (as on the streets or at carnivals)

Other synonyms of pitchman include packman, peddler, pedlar.

pitchman (noun)	hawker (noun)
someone who travels about selling his wares (as on the streets or at carnivals)	someone who travels about selling his wares (as on the streets or at carnivals)
an aggressive salesman who uses a fast line of talk to sell something	a person who breeds and trains hawks and who follows the sport of falconry